# SCUBA Diving Tricks And Tips

SCUBA stands for self contained underwater breathing apparatus. For SCUBA diving this means that as a diver descends the air in the divers cavities decreases in volume as the pressure increases. At a depth of 10m the same volume of gas will only occupy HALF the volume it would at sea level. The Body is affected in several ways by increased gas pressures at depth, high pressures of nitrogen, carbone dioxide and oxygen often lead to narcosis and also toxicity.

## Boyle's law

Boyle's law is the pressure a gas exerts on its container is inversely proportional to the volume of the container

Formula

P1V1=P2V2

## Boyle's and "The Bends"

•Boyle's Law is very important when scuba diving, because when a person descend the water the pressure of it increases meaning the volume decreases.

•When a diver beigins to ascend the pressure decreases and the volume starts to increase. •The increase in volume cause a person lungs to fill up with gas, the gas then becomes trapped and then the gas bubbles might flow into bloodstream causing pain and of course other symptoms.

## Charles' law

Charles' law is the temperature of a gas is directly proportional to the amount of space it takes up (volume).

Formula

V1 = V2

T1 T2

## Charles' law and "The Bends"

•This pertains to SCUBA, hot air takes up more "space" in a persons tank.

•Pressure increases and so does the gas temperature.

## Daltons Law

•Dlatons law is the total pressure in a container is the sum of the individual pressures (partial pressures) of all the gases as a mixture in the container.

Formula

Ptotal=P1+P2+P3...

## Daltons law and "The Bends"

•For a typical SCUBA cylinder. A person usually take air that they are in and compress it down and then pump it into a cylinder.

•doing this process this creates the gas that you need to SCUBA dive.

## "THE BENDS"

"The Bends" occurs in SCUBA divers and high altitude or aerospace events when dissolved gases.

## Oxygen Toxicity

•While breathing pure oxygen relieves the symptoms of decompression sickness and nitrogen natcosis, oxygen has a toxic effect on the brain at high pressures.

•Toxicity occurs at partial pressures above 1.4 atmosphere. Using air tanks with a mixture of helium and oxygen will solve this problem.

## Air embolism

•An air embolism is a gas bubble trapped with a bein or artery.

•An air embolism, specifically is a bubble of gas trapped with the blood vessels.

## ACTIVITIES !

•We have diving leasons for everybody !

•Food and underwater restaurant

•And when you are done diving there are underwater games for everyone !

•And our hotel is great place to stay

#62P - Air Embolism, decompression sickness, the bends, the chokes, cassion disease
Chemistry of Gases (26 of 40) Partial Pressure: Scuba Diving

## Websites

ItsTatical.com

www.chm

howstuffworks.com

## What i learned

•i learned that when SCUBA diving all of these gas laws apply to it.

•i learned new words like air embolism and i learned that they are bubbles that get trapped in a vein almost like a bloodclot.